Şehzade Mehmed Abdulaziz Efendi was an Ottoman prince, the son of Şehzade Mehmed Seyfeddin, and grandson of Sultan Abdulaziz. He was the 40th head of the Ottoman dynasty from 1973 to 1977.
- Position held
- sultan of the Ottoman Empire
- Citizenship
- Ottoman Empire, Turkey
- Born
- September 26, 1901
- Died
- January 19, 1977